Collapsible winder shaft



N 0 D T N A L v5 m R Y. B NM \Nv F. E. LANGDON Filed June 6, 1952COLLAPSIBLE WINDER SHAFT Nov. 20, 1934.

3%1 5 7 F vw ATTORNEY Patented Nov. 20, 1934' 1,981,556"

UNITED STATES PATENT OFFICE COLLAPSIBLE WINDER SHAFT Frank E. Langdo'n,Vancouver, Wash. Application June 6, 1932, Serial No. 615,6 9 4 Claims.(01.- 242- 72) This invention relates'generally to the paper- In one endof the sleeveylo is inserted a..solid making industry,- and particularlyto a collapsiextension .16 having its intermediatep'ortion 17' ble shafton which paper is wound after being reduced in diameter, as shown. Theextension manufactured, 16 has an enlarged bevelled flange 17a formedThe main object of this invention is the prothereon which matches with acorresponding duction of an improved form of winding shaft of flange 18on the sleeve 10, thereby forming a V the type disclosed in my formerpatents, Num groove for holding purposes, the welding metal bers1,631,538 and 1,811,237. 19 being shown. I h

The second object is to so construct the col- I The member 16 hasprojecting therefrom a 19 lapsible portions of the shaft that they willbe cylindrical portion 20 which is provided-with supported transverselyacross the width thereof three equi-distant grooves 21 which are inaligninstead of only along the center line, as was the ment with theslots 14. Through the portion 20 case in the patents above referred to.is formed a tapering recess 22. one side of which The third object isthe construction of a shaft has a notch 23 formed therein for thereception 15 of the type referred to in which the problems of of thepoint 24 of an operating bar 25. The end manufacture and upkeep arereduced to a 26 is provided with an internal thread to receive inimum,the threaded portion 2719f a plug 28 provided The fourth object is theproduction of a colwith ahead 29 which may be flattened or prolapsiblewinder shaft capable of withstanding vided with holes 30 for a spannerwrench. From IO' severe abuse without being rendered inoperative. thehead 29 projects a reduced shaft portion 31 These, and other objects,will become more apsimilar to a portion 32 which projects from theparent from the specification following as illuscylindrical portion 20.trated in the accompanying drawing, in which: The shaft portions 31 and32 may journal in Fig. 1 is a longitudinal section taken throughsuitable bearingswhich form a part of the paper [6 the operating end ofthe shaft showing same in machine, or may constitute a meansforlhandling 0 an expanded position, the view being taken along theshaft alone or with the paper wound thereon. the line 1-1 in Fig. 4. Theplug 28 is held against rotation by means Fig. 2 is a longitudinalsection similar to Fig. 1 of a pin 33 which itself is retained by meansof a but showing the opposite end of the shaft also in tapering sleeve34 whose square end 35 abuts 30' an expanded position. against the head29.

Fig. 3 is a longitudinal section of the complete On the end 20 isslidably mounted a tube 36 shaft with the mid portion broken away andhaving an opening 37 formed in one side thereof t k n i a p n m l to hsection hown through which the bar 25 may be inserted. The in Fi s- 1 a2 Showing e jaw o the S aft tube 36 is provided with a reduced portion38 5 in contracted position. which equals the outside diameter of theflange Fi 4 is a transverse Section ong the line 17a. The reducedportion 38 isalso provided with 4-4 in Fig. 1. holes 39 which are inalignment with the .three Fig. 5 is a transverse section along the linegrooves 21 5-5 in Fig. 3. L Surrounding the sleeve" 10. are threearcuate40 6 is an enlarged end elevation of 0119 of the jaws 40 which, whenextended inthe form shown holdin riVetS- in Fig. 4, have their outersurfaces 41 lying within 7 is a Section Showing the holding rivet acomplete circle constituting the interior of a in Sid elevation roll ofpaper 42. Each jaw 40"is providedwith a g- 3 is a Section taken thxjoughthe Cent/m1 plurality of transverse ribs 43 along the length 45 Portlonof one end of the devlce along the lme thereof. Eachrib 43 has one edge44 bevelled to 10 8-8 in correspond with the side 13 of the groove 11-.similar numbers of reference refer to similar E i 43 is secured t thinner side ofits parts throughout the several views. jaw 41 by means ofthe rivets 45 and also by the Refe in detail to the drawing, there isreduced portion 46 of the rivet 4'7 whose cylin- 60 shown a centralsleeve 10 made of heavy tubing drical head 48 is provided with aflattened pormaterial having turned in the surface thereof a tion 49forming a T head whose under side 50 plurality of grooves 11 whose sides12 are square is curled to correspond with the inner surface 51 andwhose sides 13 are bevelled (as shown). of the sleeve 10.

Through the sleeve and intersecting each groove It can be seen that byflattening the sides 49 the 56 11 is a keyhole slot 14 having anenlarged end 15. wearing surfaces of the rivet 47 are greatly in- 11creased and the tendency of the rivets to rotate is correspondinglydecreased, in fact eliminated altogether.

The rivets 47 are secured in place on their respective jaws 40 and theheads 48 are permitted to pass through the enlarged ends of the keyholeslots 14 and. the entire jaw is then removed so as to bring theflattened surfaces 49 within the slot portions 14. Each jaw is thensecured longitudinally to the tube 36 by means of its own pin 52 whichis welded in place. Each pin 52 passes through its respective hole 39into the groove 21. The purpose of the groove 21 is to hold the parts inproper alignment.

Within the sleeve 10 is placed a tension spring 53 one end of which isattached by an veyeboltv 54 to a washer 55 by means of a nut, 56. Thewasher 55 is limited in its rotation by means of a pin 57 for which therivet heads 48 form stops. The opposite end of the spring 53 isconnected by an eye bolt 58 to a washer- 59. A nut60 is placed ontheend'of the bolt 58:0utside of the washer 59. The washer 59' engagesthe ends 61 0f the screws 62 which extend through thesides' of thesleeve 10 into the interior thereof The nut 60 may be prevented fromrotating unless driven by an or-' dinary lock washer or by ins'erting'apin 63 in the washer 59 and allowing its head to projectin the directionof the nut- 60, which nut is suitably recessed to receive the projectingpin end 63. This is a common expedient and of course will prevent thenut 60 from rotating, unless being turned with sufiicient force to liftthe pin 63 out of the nut recess against the tension of the spring 53.

The operation of this form of the device is identical with thosedescribed in myformer patents and consists briefly of the following.When the shaft'is empty it is merelyplacedin position on the papermachine and the'paper started to wind thereon." It will be observed thatthe spring 53 has previously forced the jaws 40 in the direction of thesleeve 34, causing each jaw to move outwardly along its full length andto be supported transversely across its entire width. When the paper 42is wound upon the roll to an extent at which it is desirable to removesame therefrom it is only necessary to insert the bar 25 and exert apull which will move the tube 36 in the direction'of the shaft end 32,drawing all of the jaws 40 with it by reason of the pins 52 which attachthe jaws tothe tube 36 permitting the jaws to contract, due to the factthat the ribs 43 are now in register with the grooves 11.

While I have illustrated and described my improved form of winding shaftas having a groove turned in the'arbor or sleeve 10, it is obvious thatthe same results may be obtained by utilizing a tubular sleeve whoseoutside diameter approximates'the present diameter at the bottom of thegroove and adding thereto a hardened band whose outside diameter wouldapproximate the present, outside tube diameter.

I claim:

1. A collapsible winder shaft having a central tubular sleeve containingaplurality of grooves formed around same along the length thereof, thecorrespondingedges of all of said grooves forming inclines with relationto the surface of the the cylindrical inner surface of each rib restingupon the cylindrical outer surface of the central sleevewhen the shaftis in the expanded position.

2. A'winder shaft as described in claim 1, together with a spring forurging said ribs out of said grooves into an expanded position, saidshaft having an opening wherein may be inserted a lever opposed to saidspring by means of which said ribs may be moved to and held in acontracted position within saidgrooves. a

I 3. A collapsible winder shaft comprising a central tubular sleevehaving a series of encircling grooves formed around same along thelength thereof; the corresponding edge of each groove sloping withrelation to the axis of the ,sleeve, said sleeve having threelongitudinally straightbut transversely arcuate jaws substantiallyencircling said sleeve, a plurality of arcuate ribs surrounding saidsleeve, each rib being fastened to a jaw and occupying one of saidgrooves when the shaft is contracted, said sleeve having longitudinalkeyhole slots formed therein, each jaw mem-' her having a T-head rivetprojecting from its inner side through one of said keyhole slots, saidrivet having the sides of its head flattened and slidably occupying thenarrow portion of the key-v hole slot, a plug'threaded into one end 'ofsaid sleeve having a shaft extension formed thereon, a'cylindricalmember secured within the opposite end of said sleeve also having ashaft extension formed thereon, a tube slidably mounted on saidcylindrical extension, said tube and cylindrical extension havingregistering openings formed therein, means for attaching each of saidjaws to said tube in a manner to permit radial movement of said jaws,and spring means for urging all of said ribs in a direction which willcause said ribs to move out of said grooves onto the cylindrical outersurface of the sleeve.

4. A collapsible winder shaft having a tubular inner sleeve forming anarbor and characterized by having circumferential grooves formed alongthe length thereof, one corresponding edge of all of said groovesinclining with relation tothe axis of the sleeve, three separatetransversely arcuate jaws enclosing said tube along its entire length,each of said jaws having inner ribs secured thereto each of whichextends transversely of the jaw I and adapted to register withtherespective sleeve 135 grooves for the purpose of permitting theattached jaw to move radially toward the axis of the sleeve, a springfor urging all of said jaws in a direction which will cause said ribs toride up the inclined edges of the grooves onto the outer cylindricalcircumference of the sleeve, for the purpose of locking the jaws in anexpanded'position.

FRANK E. LANGDON.

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